Car-journal roller-bearing box



p 2, 1930'. w. MESSINGER CAR JOURNAL ROLLER BEARING BOX Filed May 51,1927 2 Sheets-Sheet 1 Sept. 2, 1930. I w. MESSINGER 1,774,655

CAR JOURNAL ROLLER BEARING BOX Filed May 51, 1927 2 Sheets-Sheet 2 mns/vm/r W/TME'JS.

/1 ////ar/z Mars Rye," ,7 I 5y 2 Patented Sept. 2, 1930 STATEs PATENTOFFICE or PHILADELPHIA, PENNSYLVANIA, 'Assmnon 'ro mnssmoEa pneanves.me, or PHILADELPHIA, PENNSYLVANIA, a conrona'rron or 2mm- :Objectsoffthe present, invention are to 6 assembling an'ddismantling the parts;

- c'eives life of the wheels;

plates of the'thrust bearing;

"ing the inner race of stiffen "and conserve the 'truly cylindricalshape of the bore of the box and to revent lubricant'leaka'gei5 toprovide for facility in to provide an efficient seal between the journaland bore'of 'theie'ar 'cover;'to provide for ready removal of thebox-and roller bearing parts; to prevent peiping out of the axle and yetprovide for removal of the inner race of the journal bearing; to providemicrometer adjustmentv for thelockmut; to confine impacts to the sideframe of the truck which is on the same side of themcar as the wheelwhich reth e' thrust thus opposing endwise sliding oftlie journal boxand limiting side swaying of theicar body: and thus causing the car totake curves gradu'allywithout impact, reducing wear of wheel flanges andpro onging the to provide for radial displacement of the elements of thethrust hearing without .impairing the ability of the thr stjrollersto'function properly; to prefix the clearance between the outside or endand generally, to

providea carojournal roller bearing box adaptedto meet the conditions ofservice, including manufacture, assembly, andperformance.

The invention will be claimed at the end hereof and, generally stated,it comprises a journal having a shoulder and a nut, an inner elementmounted on the journal and clamped between the shoulder and nut andcomprishaving a prolongation or neck and the center plate of a doublethrust roller bearing,a box having a cylindrical bore and provided withend covers, and an outer fixed element arranged in the bore of the boxand clamped between the covers and comprising the outer race of a rollerjournal bearing and a structure consisting of the outer plates of adouble thrust roller bearing and a spacer interposed between andconnected with the outer plates. The invention also comprises theimprovements to be presently described and finally set forth in theclaims. In the following description reference will a roller journalbearing CAR-JOURNAL ROLLER-BELRING BOX 1927. Serial No. 195,822.

embodying features of the invention.

Fig. 2 is a sectional view taken on the line 2-2 of Fig. 1 exposing theend of the journal. 7 Fig. 3 IS a sectional view illustrating amodification of the of construction.

Fig. 4 is a fragmentary sectional view illustrating the piston ringpacking.

Fig. 5 is a sectional end view of the outer I'llig of the structureshown in Fig. 3, and

ig. 6 is a sectional view taken on the line 66 of Fig. 5.

Referring to the drawings, larly Figs. 1 and 2, 1 is a ournal having ashoulder 2 and a sleeve nut 3. The journal is shown as of reduceddiameter at 4. There is an inner element mounted on the journal andclamped between the shoulder 2 andthe end of the sleeve of the nut 3.This-element comprises the inner race 5 of a roller journal bearinghaving a prolongation or neck 6, and the center plate 7 of a doublethrust roller bearing. The inner race 5 is shrunk onto the journal andits neck 6 'is provided with a groove 8 by means of which it can bepulled off, for example when the journal is worn. The center late 7 ismounted on the journal with a slip t and is keyed to the journal and itabuts upon the outer end of the sleeve 6. The box 9 is provided with acylindrical bore and is fitted with end covers 10 and 11, and there arebolts 12, of which four are shown connecting the covers. The assembl istherefore easy as is also the operation 0 dismantling the parts. Thereis an outer fixed element arranged in the bore of the box and clampedbetween the covers 10 and 11, and it comprises the outer race 13 of theroller j ournal bearing and a structure consisting of the outer plates14 and 15 of a double thrust roller bearing, and a spacer 16 interposedbetween the plates by rivets 17. The outer race 13 is provided with'inturned end flanges so that the cage 18 with the rollers 19 ispositioned against move ment in axial direction. The rollers 20 of theinvention and also details more particuand connected therewith lUUdouble thrust bearing are radially arranged in their retainers orcarriers 21. The plates of the double thrust roller bearing present fiatfaces to the rollers so that the latter can be dressed, and there is anallowance for slight eccentricity of the parts of the bearing whichalways occurs because there must be some clearance provided for therollers 19. It may be remarked that theclearance for the outer plates ofthe double thrust bearing is fixed in the shop, or pre-fixed by theprovision of the spacer 16, so that it makes no difference whether thebolts 12 are unduly tightened or not. The center plate 7 of the doublethrust bearing is accurately located by the neck 6 of the inner race 5so that when the nut 3 is properly adjusted the position of the centerplate 7 is accurately determined.

22 is a D-type washer with a differential arrangement of holes and it ismounted on the squared end of the journaland it is provided with a screw23, so that the nut 3 can be readily locked into any position in whichit is adjusted and which is appropriate for securing the parts in themanner described. The covers are provided with flanges or beads 24 whichoperate to stiffen and conserve the cylindrieal'shape of the bore in thebox. 25 are packings as of cork and they serve to provide a tight jointbetween the covers and the ends of the box. 26 are channels for oil orlubricant and the establish communication between the lubricantretaining pockets at the front and rear ends of the box permitting freecirculation. 27 are piston ring seals between the journal and bore ofthe rear cover 10. Asshown in Fig. l the journal or axle 1 is groovedfor the rece tion of the piston rings or split metallic padlring ringsand the thread for the nut 3 1s cut on the journal. However, as shown inFigs. 3 and 5, a grooved collar 28 is .mounted on the journal and thesplit metal rings 27 are mounted in the grooves of the collar. Referringto Fig. 5, a threaded thimble 29 is placed on the nut end of thejournal, keyed by the key 30 and held to place by the flange 31. Asshown the thimble is made in two arts and they are assembled on thejourna before the thread is cut, 7

being snitab y held together during that operation. The wires 32 areconvenient means for holding the split rings 27 in their grooves duringassembly of the parts.

Referring to Fig. 1, it is evident that when the front cover 11 is takenoff the nut 3 can be removed and the parts of the bearing that have beenreferred to as the fixed element along with the center plate 7 and theparts carried thereby can be withdrawn as a unit. The parts may bereadily assembled by reversing the operation last described.

It will be obvious to those skilled in the art to which the inventionrelates that modifications may be made in details of construction andarrangement and in matters'ofmere form without departing from thes'piritof journal and clamped between the'sho'ul'der and nut and comprising theinner race of a roller journal bearing having an iritegral'p'rolongationor neck and anon-rotatable center plate of a double'thrustrollerbearing,'a box aving a cylindrical' bore and provided with end coversand with bolts extending between and connecting the covers,andlanouterfixed element arranged in thebore ofthebox and clampedbetween the covers and comprising the outer race of a roller journalbearing and a structure removable as a unit'and consisting of the outerplates of a double thrust roller bearing and a'spacer interposed 'between and connected with said outer plates.

2. A journal and thrustrolle'r bearing car box as specifiedin claim 1in-which the nut is provided with a D-type washer having holes indifferential arrangement andhaving a screw. Y

3. A journal and thrust roller bearing car box as specified in claim'l.and which is'provided with end flanges onthe outer journal roller raceand which is equipped with a'roller cage arran ed out of contact withthe inner and outer rol er races.

4. A journal and thrust roller bearing car box as s ecified in claim 1and in which the journal as a ortion of reduced diameter and in which te neck on the inner journal roller race conforms to the portion ofreduced diameter.

WILLIAM MEsSINGER.

